Free Printable Year 9 Making the subject of the formula

1.

$Solve\ for\ l:\ A=l\times b$

a)

$\frac{A}{b}$

b)

$\frac{b}{A}$

c)

$A\times b$

d)

$A-b$

2.

$Solve\ for\ L:\ S=\pi rL$

a)

$S-\pi r$

b)

$\frac{S}{\pi r}$

c)

$S\pi r$

d)

$\frac{\pi r}{S}$

3.

$Solve\ for\ f:\ x=y+ft$

a)

$\frac{x+y}{t}$

b)

$\frac{y-x}{t}$

c)

$\frac{x-y}{t}$

d)

$x-y-t$

4.

$Solve\ for\ x;\ y=mx+c$

a)

$\frac{y+c}{m}$

b)

$\frac{c-y}{m}$

c)

$y-c-m$

d)

$\frac{y-c}{m}$

5.

$Solve\ for\ T;\ P=\frac{RT}{V}$

a)

$\frac{PV}{R}$

b)

$\frac{PR}{V}$

c)

$PRV$

d)

$P+V-R$

6.

$Solve\ for\ m;\ P=\frac{m\left(x-y\right)}{t}$

a)

$\frac{Pt}{x+y}$

b)

$\frac{Pt}{x-y}$

c)

$Pt-x+y$

d)

$\frac{Pt}{xy}$

7.

$Solve\ for\ r;\ V=\pi r^2h$

a)

$\sqrt{\frac{\pi h}{V}}$

b)

$\frac{V}{\pi h}$

c)

$\sqrt{\frac{V}{\pi h}}$

d)

$\frac{\pi h}{V}$

8.

$Solve\ for\ R;\ I=\frac{E}{R}$

a)

$I-E$

b)

$IE$

c)

$\frac{I}{E}$

d)

$\frac{E}{I}$

9.

$Solve\ for\ t;\ s=\frac{\left(x-y\right)t}{2}$

a)

$\frac{2s}{x-y}$

b)

$\frac{2s}{x+y}$

c)

$\frac{x-y}{2s}$

d)

$\frac{x+y}{2s}$

10.

$Solve\ for\ t:\ x=y-ft$

a)

$\frac{x+y}{f}$

b)

$\frac{x-y}{f}$

c)

$\frac{f}{x-y}$

d)

$\frac{f}{y+x}$

Year 9 Making the subject of the formula

Total questions: 10

Worksheet time: 17mins

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